/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.engine.test.concurrency;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Tom Baeyens
 */
public class ControllableThread extends Thread {

    private static final Logger LOGGER = LoggerFactory.getLogger(ControllableThread.class);

    public ControllableThread() {
        String className = getClass().getName();
        int dollarIndex = className.lastIndexOf('$');
        setName(className.substring(dollarIndex + 1));
    }

    public synchronized void startAndWaitUntilControlIsReturned() {
        LOGGER.debug("test thread will start {} and wait till it returns control", getName());
        start();
        try {
            wait();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public synchronized void returnControlToTestThreadAndWait() {
        LOGGER.debug("{} will notify test thread and till test thread proceeds this thread", getName());
        this.notify();
        try {
            this.wait();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public synchronized void proceedAndWaitTillDone() {
        LOGGER.debug("test thread will notify {} and wait until it completes", getName());
        notify();
        try {
            join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}
